Extended Aromatic and Heteroaromatic Ring Systems in the Chalcone–Flavanone Molecular Switch Scaffold
作者:Brian M. Muller、Theodore J. Litberg、Reid A. Yocum、Chanté A. Pniewski、Marc J. Adler
DOI:10.1021/acs.joc.6b00986
日期:2016.7.1
substitutions alter the pH range in which rapid interconversion occurs. Herein, more impactful structural modifications were performed via alteration of the characteristic phenyl rings to alternative aromaticsystems. It was determined that the scaffold was still viable after these changes and that the range of accessible midpoint pH values was markedly increased. To further explore the switch’s scope, scaffolds
The influence of the push-pull effect and a π-conjugated system in conversion efficiency of bis-chalcone compounds in a dye sensitized solar cell
作者:Kien Yung Teo、Mee Hing Tiong、Hung Yee Wee、Nornadia Jasin、Zhi-Qiang Liu、Ming Yang Shiu、Jyun Yang Tang、Jenn-Kai Tsai、Rafizah Rahamathullah、Wan M. Khairul、Meng Guan Tay
DOI:10.1016/j.molstruc.2017.04.059
日期:2017.9
be potentially used in different electronic areas include dyesensitizedsolarcell (DSSC). A total of six bis-chalcone compounds ( 1 – 6 ) have been synthesized using a Claisen-Schmidt condensation method under basic conditions. The compounds were used as the dye in DSSC to test their solar conversion efficiency. In the process of solarcell fabrication, titanium(II) oxide (TiO 2 ) coated glass was
New Bis(chalcones) and Their Transformation into Bis(pyrazoline) and Bis(pyrazole) Derivatives
作者:Diana C. G. A. Pinto、Artur M. S. Silva、José A. S. Cavaleiro、José Elguero
DOI:10.1002/ejoc.200390117
日期:2003.2
The reaction of bis(chalcones) 1a−d and bis(chalcone) tetrabromo derivatives 3a−d with hydrazine hydrate gave bis(pyrazolines) 4a−d and bis(pyrazoles) 5a−d, respectively. Bis(pyrazoles) 5e,f bearing hydroxyphenyl substituents have been prepared from the reaction of bis(chromones) 6c,d with hydrazine hydrate, because their synthesis from the corresponding benzyloxy-substituted 5c,d gave very poor yields